Method and apparatus for determining the operational energy cost of a hybrid vehicle
First Claim
1. An apparatus for use in a hybrid vehicle of the type having a internal combustion engine which generates power and has a certain recharge efficiency and a battery having a certain discharge efficiency and a certain initial charge, said apparatus comprising:
- a controller which dynamically determines the energy expended by said hybrid vehicle by creating an equivalent battery energy cost which is computed by use of said certain discharge efficiency, by use of said certain initial charge, and by use of said certain recharge efficiency.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus 46 for dynamically and periodically determining the amount of energy expended by a hybrid vehicle 10. Particularly, apparatus or controller 46 dynamically computes the amount of utilized energy based upon the initial charge resident within the battery 14, the amount of power supplied to the battery 14 and the discharge efficiency of the battery 14, thereby allowing an overall energy management strategy to be implemented and allowing an accurate operational analysis and/or simulation to be conducted.
55 Citations
15 Claims
-
1. An apparatus for use in a hybrid vehicle of the type having a internal combustion engine which generates power and has a certain recharge efficiency and a battery having a certain discharge efficiency and a certain initial charge, said apparatus comprising:
a controller which dynamically determines the energy expended by said hybrid vehicle by creating an equivalent battery energy cost which is computed by use of said certain discharge efficiency, by use of said certain initial charge, and by use of said certain recharge efficiency. - View Dependent Claims (2)
-
3. An apparatus for use in a hybrid vehicle of the type having an internal combustion engine which generates a certain first amount of power, a motor which generates a certain second amount of power, and a battery having a amount of initial charge, said apparatus comprising:
a controller which determines the energy used by said hybrid vehicle by creating a first quantity by multiplying said first amount of generated power by a certain attribute of said internal combustion engine, by creating a second value by use of a constant value;
by creating a third quantity by multiplying a battery discharge efficiency by said second certain amount of power, and by adding said first, second, and third quantities to said initial charge, thereby creating a fifth quantity which may be used to approximate said amount of energy used by said hybrid vehicle.- View Dependent Claims (4, 5, 6, 7)
-
8. A method for determining the amount of energy utilized by a hybrid vehicle, said method comprising the steps of:
dynamically creating an equivalent battery energy cost as said vehicle is being operated, by use of a certain recharge efficiency and by use of an amount of regenerative power. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
Specification